Type 3 Barricade Queires Part 2

I decided to continue this post from before because there are definitely a lot of questions that can be answered relating to a type 3 barricade.  What are my reflective tape options for type 3 barricades?  You can usually get engineer grade, hi intensity grade, or diamond grade sheeting.

What is the difference between these grades?  They cost a lot more as you increase the grade, but the amount they reflect also drastically increases.  What are type 3 barricades made of?  You can get plywood or plastic type 3 barricades, though plastic is a lot more popular these days because of its light weight.